Polyurethane cast elastomers can be many things. They can be strong, stiff, flexible, tough, resilient, durable, long-lasting and viscoelastic. It is a polymer chemical compound in liquid form created between an isocyanate and a polyol.
A polymer becomes an elastomer when it possesses elastic characteristics, much like rubber. (PU) polyurethane elastomers are part of the polyurethane chemical group, and castable polyurethane elastomers are a small part of this group.
PU polyurethane elastomers are formed by combining an isocyanate such as (methylene diphenyl diisocyanate) MDI, or (toluene diisocyanate) TDI, and a polymeric polyol - by changing these constituents and their ratio - the qualities of the polyurethane elastomers are exploited and formulated.
Additives such as pigments, flame retardants and/or fillers can also be added to the formulation.
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